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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1671 (Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L - Repair Instructions - Off Vehicle (3 Of 3)) >> Automatic Transmission Flex Plate Installation

Automatic Transmission Flex Plate Installation

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Flex Plate & Bolts
    GM1658140Courtesy of GENERAL MOTORS CORP.
    NOTE: The flex plate does not use a locating pin for alignment and will not initially seat against the crankshaft flange, but will be pulled onto the crankshaft by the engine flex plate bolts. This procedure requires a 3 stage tightening process.
  1. Install the flex plate to the crankshaft.
  2. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the flex plate bolts.
    3. Fig 2: Identifying Flywheel Bolt Tightening Sequence
    GM63174Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  3. Install the engine flex plate bolts.
    1. Tighten the engine flex plate bolts (1-6) a first pass in sequence to 20 N.m (15 lb ft) .
    2. Tighten the engine flex plate bolts (1-6) a second pass in sequence to 50 N.m (37 lb ft) .
    3. Tighten the engine flex plate bolts (1-6) a final pass in sequence to 100 N.m (74 lb ft) .
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